3. Patient should not eat seafood for a 48-hour period prior to
start of collection.

4. See Trace Metals Analysis Specimen Collection and
Transport in Special Instructions for complete instructions.

Additional
Information:

1. 24-Hour volume is required.

2. See Urine Preservatives-Collection and Transportation
for 24-Hour Urine Specimens in Special Instructions for
multiple collections.

3. High concentrations of gadolinium and iodine are known to
interfere with most metals tests. If either gadolinium-or
iodine-containing contrast media has been administered, a specimen
should not be collected for 96 hours.